Research Interests

• Parallel and Distributed Systems
• High Performance Computing
• Grid Computing
• Game Theory
• Science and Engineering Applications

• Ph.D. in Computer Science, Fall 2007, University of Texas at San Antonio, TX, USA
• Advisor: Dr. Anthony T. Chronopoulos
• M.S. in Computer Science, Summer 2003, University of Texas at San Antonio, TX, USA
• B.Tech. in Computer Science, May 2000, Andhra University, AP, INDIA

1. A. T. Chronopoulos, S. Penmatsa, J. Xu and S. Ali. Distributed Loop-Scheduling Schemes for Heterogeneous Computer Systems. Concurrency and Computation: Practice and Experience, Vol. 18, Issue 7, pp 771-785, June 2006.
2. A. T. Chronopoulos, S. Penmatsa, N. Yu and D. Yu. Scalable Loop Self-Scheduling Schemes for Heterogeneous Clusters. Intl. Journal of Computational Science and Engineering, Vol. 1, Issue 2/3/4, pp 110-117, 2005.
3. S. Penmatsa and A. T. Chronopoulos. Game-Theoretic Load Balancing for Distributed Systems. IEEE Transactions on Parallel and Distributed Systems, (under review).
4. S. Penmatsa and A. T. Chronopoulos. Dynamic Load Balancing for Multi-User Jobs in Distributed Systems. IEEE Transactions on Computers, (under review).
5. M. Musku, A. T. Chronopoulos, S. Penmatsa and D. Popescu. Spectrum Load Balancing for Medium Access in Cognitive Radio Systems. IEEE Communication Letters, (under review).

1. S. Penmatsa and A. T. Chronopoulos. Dynamic Multi-User Load Balancing in Distributed Systems. Proc. of the 21st IEEE Intl. Parallel and Distributed Processing Symposium (IPDPS 2007), Long Beach, California, USA, March 26-30, 2007.
2. S. Penmatsa, A. T. Chronopoulos, N. T. Karonis and B. Toonen. Implementation of Distributed Loop Scheduling Schemes on the TeraGrid. Proc. of the 21st IEEE Intl. Parallel and Distributed Processing Symposium (IPDPS 2007), 4th High Performance Grid Computing Workshop, Long Beach, California, USA, March 26-30, 2007.
3. M. Musku, A. T. Chronopoulos, S. Penmatsa and D. Popescu. A Game Theoretic Approach for Medium Access of Open Spectrum in Cognitive Radios. Proc. of the 2nd IEEE Intl. Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2007), Orlando, Florida, USA, August 1-3, 2007.
4. A. T. Chronopoulos, L. M. Ni and S. Penmatsa. Multi-Dimensional Dynamic Loop Scheduling Algorithms. Proc. of IEEE Intl. Conference on Cluster Computing, Austin, Texas, USA, September 17-20, 2007.
5. S. Penmatsa and A. T. Chronopoulos. Cooperative Load Balancing for a Network of Heterogeneous Computers. Proc. of the 20th IEEE Intl. Parallel and Distributed Processing Symposium (IPDPS 2006), 15th Heterogeneous Computing Workshop, Rhodes Island, Greece, April 25-29, 2006.
6. S. Penmatsa and A. T. Chronopoulos. Price-based User-optimal Job Allocation Scheme for Grid Systems. Proc. of the 20th IEEE Intl. Parallel and Distributed Processing Symposium (IPDPS 2006), 3rd High Performance Grid Computing Workshop, Rhodes Island, Greece, April 25-29, 2006.
7. S. Penmatsa and A. T. Chronopoulos. Job Allocation Schemes in Computational Grids based on Cost Optimization. Proc. of the 19th IEEE Intl. Parallel and Distributed Processing Symposium (IPDPS 2005), Joint Workshop on High-Performance Grid Computing and High-Level Parallel Programming Models, Denver, Colorado, USA, April 3-8, 2005.
8. A. T. Chronopoulos, S. Penmatsa and N. Yu. Scalable Loop Self-Scheduling Schemes for Heterogeneous Clusters. Proc. of IEEE Intl. Conference on Cluster Computing, Chicago, Illinois, USA, pp 353-359, Sept. 23-26, 2002.

• Most Outstanding Graduate Student Award, 2007
• Prestigious HEB Dissertation Fellowship Award, 2006
• Who's Who Among Students, 2006
• Who's Who at UTSA, 2006
• Doctoral Fellowship, Fall 2003 - Spring 2007
• State of Texas Public Education Grant, 2002, 2003, 2005 and 2006
• NSF Graduate Research Assistantship, Summer 2001 - Spring 2002, and Summer 2007

• Reviewer for Parallel Computing Journal (PARCO), IEEE Transactions on Parallel and Distributed Systems (TPDS), IEEE Intl. Symp. on Network Computing and Applications (NCA), Workshop on Incentive Based Computing (IBC)
• Member of IEEE  and IEEE Computer Society
• Member of ACM

• Assistant Professor, Dept. of Mathematics & Computer Science, Southern Arkansas University, Fall 2007 - Present.
• Instructor, Dept. of Computer Science, University of Texas at San Antonio, Fall 2002 - Spring 2007.
• Teaching Assistant, Dept. of Computer Science, University of Texas at San Antonio, Fall 2002 - Spring 2003.
• Research Assistant, Dept. of Computer Science, University of Texas at San Antonio, Summer 2001 - Spring 2002, and Summer 2007.